Covering for boilers, pipes, and the like



Patentes July si, 19:23.`

.`EDTARDV SPIGER; AO F VA'NGOUVER,-BFIIT1SH'"GOLUMBIA; CANADA,

" cov-@mueren BoILERs, PIrns,1 .A1tnmHnL1Kn.

T o allfwhom t 1mg/,concern l Beit known that I, .E DwARn VSinclair, a 'subject oflthe King vofGreat.'ilBritain,sand: a

resident of the cityl of Vancouver, .in the. Province of yBritish 'Columbia,anada,have invented certain new and useful Improvel ments `.in .Coverings for Boilers, ',Fipesfand" the like, ofl'wlhich the' following zis aspeci.- lication. .y

My 4YI lrexltoin relates-to improvements `ilu poses,'and the object of my invention V.ils-,to

provide 2 Covering SO-Censavif @11d-,erranged that its outer surface 4vis maintained at all times coollwhle'gat the Sametime a finishedand attractive'appearance is rendered possible.

I attain this object by the construction illustrated in the accompanying drawings.

in which- Fig. 1 is an outside elevation of av covered boiler, in part section.

Fig. 2 is a detail view of the `spacing band. Y L

Fig. 3 is a fragmentary view showing the covering applied to a pipe. f Y Y Fig. 4 is a cross sectional View taken through the line 4 4 of Fig. 3. v

Fig. 5 is an enlarged fragmentary-'sectional view showing a portion of the'boiler shell and the covering. y

Figs. 6 and 7 are views illustrating modified constructions of the spacing band. Fig. 8 is another enlarged fragmentary sectional view showing a portion of the boiler shell and covering; the outside cover spaced by strip of Fig. 2.

Similar figures of reference indicate simi- Y Y Y any desired length and diameter connected lar parts throughout the several views.

In carrying out the invention, referring now to Fig. 1, in which the boiler is indi-` cated by the numeral 1, an asbestos ylayer 2, of the designed thickness, is -irst applied to the boiler to cover the same, and then around this asbestos covering is placed a cover of rigid material, such' as sheet metal,'indicated generally by the numeral 3, formed out of two semi-circular portions 4 and 5 connected together by lugs 6 and 7 through which are passed bolts 8, on theinside of which semi-circular portions are secured corrugated metal bands 9. of similar construction to that shown in Fi-g. 2 with or without the connecting strip shown therein, or according to the modified construction illustrated in Fig. 7 from which it insisten ney @smeared .bands e will .bien

on ".the j asbestos. .covering 2 and y,sp,z tce,the

PrOviSOhl f `.Whild fait "spac ensures that metal cover 3 frorn'it so lthatan airspace 10,;60

is formed ,betweenthetwo coverings VtheA th/outer cover is maintainedcol, since thej heat troncv fhebo'. @rand thefasfbfeSfSQdQeS .notpassrqit I Iir `pipe covering, is 'illustrated ,in

Fig. igthpecorifugated bands Q .are 'mounted Y' 0.1.1 and secutdjtofa thin ,metalstrp' 11' 'the aroundthe pipe, v'indicated by the numeralVv i 13, they. may be secured -in position by pass-7 ing the free end 14 of the strip 11 through the eye V12, pulling theband tight, and then bending back the end- 141: to grip the eye, as illustrated in Fig. 3. y Thus when the outer covering 1.5, of magnesia,or asbestos, or any other analogous material is placed around the pipe it isspaced therefrom by soy the corrugatedibands, on whichl it rests, so

' band isillustrated inj Fig. 6 and which consists of a plurality of pipe sections 17 `of ss' i boiler, orthe pipe, as the case may be,and the bands of this construction are secured in position by twistingtogether the ends of the wires, which are left projecting asuiti able distance beyond they last section at each opposite end.4 Y

From the foregoing it will be seen that I have devised a covering for boilers, pipes, or the like the construction of which is such."

that when assembled its outer surface is maintained cool at all times. Y

What I claim as my invention is 1. A covering for boilers oomprisinga layer of heat insulating material laid di# rectly on and wrapped tightly around thel boiler shell of a thickness designed to prevent heat radiation from the shell, flexible corrugated bands wrapped around said layer with the corrugations disposed longitudinally of it, and a metal casing surrounding the.

boiler and spaced from the heat insulating layer by the bands, said easing being capable of being vtightened whereby the layer is fric- `tionally held to the boiler shell and the layer, bands, and casing riction'ally held one to the other. .e

the latter at its opposite ends, one of said ends being provided with an eye through which the opposite-end may be passed.

3. The `combination with a boiler and a casing therefor, ofV an interposed spacing band presenting inner and outer corrugated surfaces, and means interposed between the band and the casing to Aexclude the'material of the latter fromthe spaces between the corrugations of the band.

4.- The combination with a boiler and an inclosing casing of an interposed spacing band. presenting. inner and outer corrugated surfaces and a fastening strip for the band secured to the outer surface thereof, and

serving to prevent pressing or squeezing of the casing into the corrugations of the band.

5. A structure according to claim 4, in which the said strip is divided and provided with means for securing the divided ends together to tighten and fasten the band in position.

6. A spacing spring for interposition between aboiler and a heat insulating covering comprising a transversely corrugated metal band anda metal strip applied to and extending around the outer corrugated side of the band.

Dated at Vancouver, B. C., Canada, this 15th day of November, 1921.

' EDWARD SPICER. 

